CVE-2026-25776

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-04-08. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Movable Type provided by Six Apart Ltd. contains a code injection vulnerability which may allow an attacker to execute arbitrary Perl script.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
59(Track)
EG Risk 59/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
39%
KEV
Not listed

Published

April 8, 2026

Last Modified

July 25, 2026

Advisory Details (3)

Auto-updated Aug 29, 2026
No patch confirmed yet.
generic

[重要] Movable Type 9.1.1 / 9.0.7 / 8.8.3 / 8.0.10、Movable Type Premium 9.1.1 / 9.0.7 / 2.15 の提供を開始（セキュリティアップデート） | Movable Type ニュース

https://www.sixapart.jp/movabletype/news/2026/04/08-1100.html
generic

MovableType.org – News:[Security Update] Movable Type 9.0.7, 8.8.3 and 8.0.10 Released

https://movabletype.org/news/2026/04/mt-907-released.html
generic

JVN#66473735: Multiple vulnerabilities in Movable Type

https://jvn.jp/en/jp/JVN66473735/

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 82× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 239 total refreshes for this CVE.

  1. 2026-09-01 04:39 UTCEPSS rescore
  2. 2026-08-30 19:17 UTCEPSS rescore
  3. 2026-08-30 01:22 UTCEPSS rescore
  4. 2026-08-28 21:41 UTCEPSS rescore
  5. 2026-08-27 14:25 UTCEPSS rescore
  6. 2026-08-26 14:46 UTCEPSS rescore
  7. 2026-08-25 13:48 UTCEPSS rescore
  8. 2026-08-23 00:19 UTCEPSS rescore
  9. 2026-08-21 23:49 UTCEPSS rescore
  10. 2026-08-20 22:55 UTCEPSS rescore
  11. 2026-08-19 17:03 UTCEPSS rescore
  12. 2026-08-18 13:48 UTCEPSS rescore
  13. 2026-08-17 13:47 UTCEPSS rescore
  14. 2026-08-16 14:56 UTCEPSS rescore
  15. 2026-08-16 11:32 UTCGHSA enrichment
  16. 2026-08-16 07:42 UTCEG score recompute
  17. 2026-08-16 07:42 UTCGHSA enrichment
  18. 2026-08-16 02:14 UTCEPSS rescore
  19. 2026-08-15 02:11 UTCEG score recompute
  20. 2026-08-15 02:11 UTCGHSA enrichment
  21. 2026-08-15 01:30 UTCEPSS rescore
  22. 2026-08-14 22:22 UTCGHSA enrichment
  23. 2026-08-14 18:30 UTCGHSA enrichment
  24. 2026-08-14 13:00 UTCGHSA enrichment
  25. 2026-08-14 09:09 UTCGHSA enrichment
Show 75 more
  1. 2026-08-14 05:20 UTCEG score recompute
  2. 2026-08-14 05:20 UTCGHSA enrichment
  3. 2026-08-13 22:00 UTCEPSS rescore
  4. 2026-08-13 09:37 UTCGHSA enrichment
  5. 2026-08-13 03:13 UTCGHSA enrichment
  6. 2026-08-12 23:24 UTCGHSA enrichment
  7. 2026-08-12 19:35 UTCEG score recompute
  8. 2026-08-12 19:35 UTCGHSA enrichment
  9. 2026-08-12 13:50 UTCEPSS rescore
  10. 2026-08-11 23:37 UTCGHSA enrichment
  11. 2026-08-11 19:48 UTCEG score recompute
  12. 2026-08-11 19:48 UTCGHSA enrichment
  13. 2026-08-11 13:42 UTCEPSS rescore
  14. 2026-08-11 07:00 UTCGHSA enrichment
  15. 2026-08-11 03:10 UTCEG score recompute
  16. 2026-08-11 03:10 UTCGHSA enrichment
  17. 2026-08-11 00:00 UTCEPSS rescore
  18. 2026-08-10 11:56 UTCGHSA enrichment
  19. 2026-08-10 07:56 UTCGHSA enrichment
  20. 2026-08-10 04:07 UTCGHSA enrichment
  21. 2026-08-10 00:18 UTCGHSA enrichment
  22. 2026-08-09 20:29 UTCGHSA enrichment
  23. 2026-08-09 16:40 UTCEG score recompute
  24. 2026-08-09 16:40 UTCGHSA enrichment
  25. 2026-08-09 13:46 UTCEPSS rescore
  26. 2026-08-09 12:50 UTCGHSA enrichment
  27. 2026-08-09 08:40 UTCGHSA enrichment
  28. 2026-08-09 04:51 UTCEG score recompute
  29. 2026-08-09 04:51 UTCGHSA enrichment
  30. 2026-08-08 16:37 UTCEPSS rescore
  31. 2026-08-08 10:12 UTCGHSA enrichment
  32. 2026-08-08 06:23 UTCGHSA enrichment
  33. 2026-08-08 02:33 UTCGHSA enrichment
  34. 2026-08-07 22:44 UTCGHSA enrichment
  35. 2026-08-07 18:55 UTCEG score recompute
  36. 2026-08-07 18:55 UTCGHSA enrichment
  37. 2026-08-07 14:50 UTCGHSA enrichment
  38. 2026-08-06 17:34 UTCEG score recompute
  39. 2026-08-06 17:34 UTCGHSA enrichment
  40. 2026-08-06 13:46 UTCEPSS rescore
  41. 2026-08-06 12:53 UTCGHSA enrichment
  42. 2026-08-06 07:34 UTCGHSA enrichment
  43. 2026-08-06 03:45 UTCGHSA enrichment
  44. 2026-08-05 23:56 UTCEG score recompute
  45. 2026-08-05 23:56 UTCGHSA enrichment
  46. 2026-08-05 19:17 UTCEPSS rescore
  47. 2026-08-04 15:10 UTCEPSS rescore
  48. 2026-08-04 06:00 UTCGHSA enrichment
  49. 2026-08-04 02:11 UTCGHSA enrichment
  50. 2026-08-03 22:14 UTCEG score recompute
  51. 2026-08-03 22:14 UTCGHSA enrichment
  52. 2026-08-03 10:36 UTCEPSS rescore
  53. 2026-08-03 01:38 UTCGHSA enrichment
  54. 2026-08-02 21:49 UTCGHSA enrichment
  55. 2026-08-02 18:00 UTCGHSA enrichment
  56. 2026-08-02 14:11 UTCEG score recompute
  57. 2026-08-02 14:11 UTCGHSA enrichment
  58. 2026-08-02 02:26 UTCEPSS rescore
  59. 2026-08-01 04:16 UTCEPSS rescore
  60. 2026-07-30 16:27 UTCEPSS rescore
  61. 2026-07-30 01:30 UTCEPSS rescore
  62. 2026-07-28 15:36 UTCEPSS rescore
  63. 2026-07-26 14:54 UTCEPSS rescore
  64. 2026-07-26 14:54 UTCEPSS rescore
  65. 2026-07-26 08:54 UTCEG score recompute
  66. 2026-07-26 08:54 UTCGHSA enrichment
  67. 2026-07-25 14:18 UTCEPSS rescore
  68. 2026-07-25 14:17 UTCEPSS rescore
  69. 2026-07-24 14:17 UTCEPSS rescore
  70. 2026-07-23 14:18 UTCEPSS rescore
  71. 2026-07-23 14:18 UTCEPSS rescore
  72. 2026-07-23 03:07 UTCEG score recompute
  73. 2026-07-22 14:08 UTCEPSS rescore
  74. 2026-07-22 14:08 UTCEPSS rescore
  75. 2026-07-21 15:24 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-25776?
CVE-2026-25776 is a critical vulnerability published on April 8, 2026. Movable Type provided by Six Apart Ltd. contains a code injection vulnerability which may allow an attacker to execute arbitrary Perl script.
When was CVE-2026-25776 disclosed?
CVE-2026-25776 was first published in the National Vulnerability Database on April 8, 2026, with the most recent update on July 25, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-25776 actively exploited?
CVE-2026-25776 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 61.3% of all scored CVEs.
What is the CVSS score of CVE-2026-25776?
CVE-2026-25776 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-25776?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-25776, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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